JPS56111195A - Memory system - Google Patents

Memory system

Info

Publication number
JPS56111195A
JPS56111195A JP993880A JP993880A JPS56111195A JP S56111195 A JPS56111195 A JP S56111195A JP 993880 A JP993880 A JP 993880A JP 993880 A JP993880 A JP 993880A JP S56111195 A JPS56111195 A JP S56111195A
Authority
JP
Japan
Prior art keywords
power supply
memory
volatile memory
restoration
preservation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP993880A
Other languages
Japanese (ja)
Inventor
Takashi Rokutanda
Takashi Hiraoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP993880A priority Critical patent/JPS56111195A/en
Publication of JPS56111195A publication Critical patent/JPS56111195A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/1441—Resetting or repowering

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE:To enable the automatic check of the effectiveness of preservation of information of volatile memory at the interruption of power supply, by checking the result of refresh by a backup power supply with the readout in response to the recovery of main power supply. CONSTITUTION:When a system power supply 3 is interrupted, an operation control device 1 refreshes the volatile memory 2 with the power supply from a backup DC power supply 4 such as a battery and preserves the memory content. This memory content is read out via the device 1 in response to the restoration of the power supply 3 and the check whether or not this pattern is in agreement with the written- in pattern is made at the device 1. Further, if in disagreement, the memory system is reset to the initial state via the device 1. Thus, the state of preservation of the storage information of the volatile memory is automatically checked at power supply interruption, and the information processing operation of the memory system by the volatile memory after the restoration of power supply can be restarted smoothly.
JP993880A 1980-02-01 1980-02-01 Memory system Pending JPS56111195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP993880A JPS56111195A (en) 1980-02-01 1980-02-01 Memory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP993880A JPS56111195A (en) 1980-02-01 1980-02-01 Memory system

Publications (1)

Publication Number Publication Date
JPS56111195A true JPS56111195A (en) 1981-09-02

Family

ID=11733953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP993880A Pending JPS56111195A (en) 1980-02-01 1980-02-01 Memory system

Country Status (1)

Country Link
JP (1) JPS56111195A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835799A (en) * 1981-08-21 1983-03-02 Matsushita Electric Ind Co Ltd Detecting system for ram backup error
JPS5848368A (en) * 1981-09-17 1983-03-22 Oki Electric Ind Co Ltd Over-discharge detection of ram backup battery
JPS5870496A (en) * 1981-10-21 1983-04-26 Matsushita Electric Ind Co Ltd Checking method for memory device
JPS5899822A (en) * 1981-12-10 1983-06-14 Casio Comput Co Ltd Initial state setting device
JPS58190742U (en) * 1982-06-15 1983-12-19 東北金属工業株式会社 Battery voltage monitoring circuit
JPS62298856A (en) * 1986-06-18 1987-12-25 Matsushita Electric Ind Co Ltd Storing method for set data
JPH0378813A (en) * 1989-08-23 1991-04-04 Kokusai Electric Co Ltd Hit detection processing method
JPH0627942A (en) * 1993-04-15 1994-02-04 Kawai Musical Instr Mfg Co Ltd Electronic musical instrument and its power-on time processing method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835799A (en) * 1981-08-21 1983-03-02 Matsushita Electric Ind Co Ltd Detecting system for ram backup error
JPS5848368A (en) * 1981-09-17 1983-03-22 Oki Electric Ind Co Ltd Over-discharge detection of ram backup battery
JPS5870496A (en) * 1981-10-21 1983-04-26 Matsushita Electric Ind Co Ltd Checking method for memory device
JPS5899822A (en) * 1981-12-10 1983-06-14 Casio Comput Co Ltd Initial state setting device
JPH0334097B2 (en) * 1981-12-10 1991-05-21 Casio Computer Co Ltd
JPS58190742U (en) * 1982-06-15 1983-12-19 東北金属工業株式会社 Battery voltage monitoring circuit
JPS62298856A (en) * 1986-06-18 1987-12-25 Matsushita Electric Ind Co Ltd Storing method for set data
JPH0378813A (en) * 1989-08-23 1991-04-04 Kokusai Electric Co Ltd Hit detection processing method
JPH0627942A (en) * 1993-04-15 1994-02-04 Kawai Musical Instr Mfg Co Ltd Electronic musical instrument and its power-on time processing method

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